_.min and _.max can combine

[ahonn]

I find _.max and _.min have a lot of duplicate code, different only Infinity and - Infinity.
So I don't know why not combine _.max and _.min, create function like createMaxOrMin.

[megawac]

#2142 (ping @jridgewell)

[ahonn]

I had seen, but I still don't understand why don't do that.